21. The birth of signals intelligence in a modern sense dates to the Russo-Japanese War. 22. Following World War II, Friedman remained in government signals intelligence . 23. Cilluffo speculated that could be information about bugging techniques or about long-range signals intelligence . 24. Field signals intelligence was obtained, including bombing instructions and information from the " Fliegerkorps" 25. Their roles are to collect imagery intelligence, signals intelligence , and measurement and signature intelligence. 26. Additional independent signals intelligence also proved helpful in evaluating Schellenberg. 27. Signals intelligence encompasses both Electronic Intelligence ( Elint ) and Communications Intelligence ( Comint ).28. Communication Command also operated the Canadian contribution to the Five Eyes ECHELON signal intelligence network. 29. The aircraft also possesses signal intelligence and C3I capabilities. 30. Together they made up the fledgling Signal Intelligence Service.
